1. Component B of condensation mold silica gel is a catalyst, which is susceptible to moisture hydrolysis, so the cover should be sealed after use.
2. Once groups A and B of condensation mold silica gel are mixed, chemical reaction occurs; Immediately, the viscosity gradually increases and cannot be stopped. In order to avoid waste, it should be prepared as needed according to the dosage. It should be used immediately after preparation without delay.
3. The mix proportion of silica gel group A and B of condensation mold is related to the speed of chemical reaction and the performance of the mold. The more component B, the faster the reaction, the higher the strength and hardness of the product, but the lower the toughness. Therefore, accurate weighing is required.
4. Before the preparation of silica gel for condensation mold, the component A shall be stirred up and down evenly, and then weighed.
5. The pouring method is suitable for relief, and the brushing method is suitable for the manufacture of three-dimensional molds. For casting relief molds, a frame with a length and width of 4-6cm larger than the original length and width shall be made first. The border should be flat and the inner surface should be smooth. When pouring, place the frame on the clean glass plate, and then place the original in the frame, leaving a gap of 2-3cm on each side.
6. The normal vulcanization temperature of mold silica gel is what we usually call room temperature, but the climate in different regions is different, and the natural room temperature is also different. In order to vulcanize completely, we will match appropriate sulfur agents according to the temperature of customers in different regions during use